Where does “diplomat” come from?

diplomat (Malay) comes from English diplomat, from French diplomate, from French diplomatique, from New Latin diplomaticus, from Latin diploma, from Ancient Greek δίπλωμα, from Ancient Greek διπλόω, from Ancient Greek -όω — he, she.

diplomat (Malay): diplomat: a person, such as an ambassador, who is accredited to represent a government officially in its relations with other governments or international organisations